Yes, batteries got cheaper again last year. It’s so predictable at this point, it’s almost boring. Almost.
In 2025, the average price of a lithium-ion battery pack was $108 per kilowatt-hour, down 8% from the year prior, according to research firm BloombergNEF’s latest annual survey. It’s the continuation of a long-standing trend: With the exception of 2022, battery prices have declined every single year since 2010, when BNEF began looking at the data.
It’s a crucial metric — something of a skeleton key for the entire energy transition.
Cheaper batteries mean cheaper electric vehicles, and that in turn puts more EVs and fewer gas cars on the road. Cheaper batteries mean you can squeeze more juice out of your solar panels, displacing more planet-warming coal and gas. Cheaper batteries mean cheaper, clean energy — urgently needed in the U.S. as fast-rising utility bills collide with the push to decarbonize our energy system.